The needle-nosed pliers are used to screw and some screws that are inconvenient to reach. In fact, the sleeve can be used instead, but the needle-nosed pliers also has a shearing function to pull the wire head.
German Type Diagonal Pliers are used to cut cables, usually copper wire, iron wire, (not recommended to cut the piano wire, that is, the spring, will cut the edge) each brand of Japanese Type Diagonal Pliers has the largest wire cut diameter and hardness It can cut the wire below 6 square meters, and cut it with 6 yuan or more with a special cable. Some diagonal pliers also have a threaded hole and a crimping function.
After each use of the pliers, there will be wear marks on the cutting edge. Therefore, it is recommended to clean the dirt after use and oil maintenance to prevent aging and oxidation of the cutting edge. It is not recommended to grind the edge because the hardness of the cutting edge and the hardness of the jaw are not the same. The cutting edge is tempered. So some of the pliers are getting worse and harder.